Fenestrated endoluminal stent system

• US 20070021822A1
• Filed: 07/24/2006
• Published: 01/25/2007
• Est. Priority Date: 07/25/2005
• Status: Active Grant

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Boatman, Scott
• Granted Patent: US 7,833,259 B2
• Time in Patent Office: Days
• US Class Current: 623/1.130
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91566 connected trough to trough
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2230/0067 : conical

Abstract

An intraluminal prosthesis is provided for strengthening a main lumen and a branch lumen in direct fluid communication with the main lumen. The prosthesis may comprise a tubular graft and a flexible stent. The tubular graft may include a flexible body having a wall with a fenestration. The flexible stent may include a body with at least one open space to encourage tissue prolapse. The flexible stent may be configured for intraluminal coupling to the fenestration of the tubular graft, so that the entire prosthesis may be assembled and anchored into a main lumen and a branch lumen with a minimally invasive procedure. The open space may encourage tissue prolapse, which may act to anchor the flexible stent to the branch lumen.

Claims

1. An intraluminal prosthesis for strengthening a main lumen and a branch lumen in direct fluid communication with the main lumen, the prosthesis comprising:

a tubular graft comprising a flexible body having a wall with a fenestration; and

a flexible stent comprising a body having an open space to encourage tissue prolapse;

wherein the flexible stent is configured for intraluminal coupling to the fenestration of the tubular graft.

2. The intraluminal prosthesis of claim 1 wherein the tubular graft further comprises a plurality of self expanding stents that are coupled along the length of the flexible body of the tubular graft.

3. The intraluminal prosthesis of claim 1 wherein the flexible stent comprises a radially expandable elongated member with a passage extending longitudinally therethrough.

4. The intraluminal prosthesis of claim 1 wherein the flexible stent body comprises a first longitudinal segment coupled between a second longitudinal segment and a third longitudinal segment.

5. The intraluminal prosthesis of claim 4 wherein the second and third longitudinal segments each comprise a plurality of laterally interconnected closed cells.

6. The intraluminal prosthesis of claim 4 wherein the first longitudinal segments comprise at least one interconnection member.

7. The intraluminal prosthesis of claim 1 wherein the flexible stent body comprises alternating longitudinal segments.

8. The intraluminal prosthesis of claim 1 wherein the flexible stent comprises a plurality of bendable tabs coupled to a longitudinal end of the flexible stent body.

9. The intraluminal prosthesis of claim 8 wherein each of the bendable tabs is configured to bend substantially radially outwardly from the flexible stent body when a force is applied to the bendable tab from an inside of the flexible stent body.

10. The intraluminal prosthesis of claim 9 wherein the flexible stent comprises a radio opaque marker coupled to the body of the flexible stent near one of the bendable tabs.

11. The intraluminal prosthesis of claim 10 wherein the tubular graft further comprises a self expanding stent mounted to and extending beyond an end of the flexible body of the tubular graft.

12. The intraluminal prosthesis of claim 11 further comprising a plurality of self expanding stents that are coupled along the length of the flexible body of the tubular graft,

wherein the self expanding stent mounted to the end of the flexible body includes attachment barbs, and

wherein the flexible stent body comprises a radially expandable elongated member with a passage extending longitudinally therethrough, the elongated member having alternating longitudinal segments in the form of a first longitudinal segment, including at least one interconnection member, coupled between a second longitudinal segment and a third longitudinal segment, the second and third longitudinal segments each comprising a plurality of laterally interconnected closed cells.

13. A flexible stent for strengthening a branch lumen, the prosthesis comprising:

a body, the body comprising;

a first and a second longitudinal segment, where each of the first and second longitudinal segments includes a plurality of laterally interconnected cells; and

a third longitudinal segment including an interconnection member, where the third longitudinal segment is coupled between the first and second longitudinal segments and includes open space between the first and second longitudinal segments to encourage tissue prolapse; and

a plurality of bendable tabs coupled to a longitudinal end of the body.

14. The flexible stent of claim 13 wherein the plurality of laterally interconnected cells comprises open cells.

15. The flexible stent of claim 13 wherein the plurality of laterally interconnected cells comprises closed cells.

16. The flexible stent of claim 13 wherein the plurality of laterally interconnected cells comprises open and closed cells.

17. The flexible stent of claim 13 wherein the body comprises a radially expandable elongated member with a passage extending longitudinally therethrough.

18. The flexible stent of claim 13 wherein in each of the bendable tabs is configured to bend substantially radially outwardly from the body when a force is applied to the bendable tab from an inside of the flexible stent body.

19. The flexible stent of claim 18 further comprising a radio opaque marker coupled to the body, wherein the body comprises a radially expandable elongated member with a passage extending longitudinally therethrough, wherein the plurality of laterally interconnected cells comprises open and closed cells.

20. An intraluminal prosthesis for strengthening a main lumen and a branch lumen in direct fluid communication with the main lumen, the prosthesis comprising:

a tubular graft comprising a flexible body having a wall with a fenestration, a plurality of self expanding stents coupled along the length of the flexible body of the tubular graft, and a self expanding stent including attachment barbs mounted to and extending beyond an end of the flexible body of the tubular graft; and

a flexible stent comprising a body having an open space to encourage tissue prolapse, the body comprising a radially expandable elongated member with a passage extending longitudinally therethrough, the elongated member having alternating longitudinal segments in the form of a first longitudinal segment, including at least one interconnection member, coupled between a second longitudinal segment and a third longitudinal segment, the second and third longitudinal segments each comprising a plurality of laterally interconnected closed cells, the flexible stent having a plurality of bendable tabs coupled to a longitudinal end of the flexible stent body, each of the bendable tabs being configured to bend substantially radially outwardly from the flexible stent body when a force is applied to the bendable tab from an inside of the flexible stent body, for intraluminal coupling to the fenestration of the tubular graft, and a radio opaque marker coupled to the body of the flexible stent near one of the bendable tabs.